udev-115: Kernel events filtering improvement.

In order to avoid creating dozens of ttys and ptys, we have to discard 
some specific kernel events.


git-svn-id: https://svn.o-hand.com/repos/poky/trunk@2820 311d38ba-8fff-0310-9ca6-ca027cbcb966

1 files changed, 104 insertions, 0 deletions

diff --git a/meta/packages/udev/udev-115/udevtrigger_add_devname_filtering.patch b/meta/packages/udev/udev-115/udevtrigger_add_devname_filtering.patch
new file mode 100644
index 0000000000..87cafcaa9d
--- /dev/null
+++ b/meta/packages/udev/udev-115/udevtrigger_add_devname_filtering.patch
@@ -0,0 +1,104 @@
+---
+ udevtrigger.c |   40 ++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 40 insertions(+)
+
+Index: udev-115/udevtrigger.c
+===================================================================
+--- udev-115.orig/udevtrigger.c	2007-08-24 01:29:54.000000000 +0200
++++ udev-115/udevtrigger.c	2007-09-21 18:45:28.000000000 +0200
+@@ -39,6 +39,8 @@
+ LIST_HEAD(device_list);
+ LIST_HEAD(filter_subsystem_match_list);
+ LIST_HEAD(filter_subsystem_nomatch_list);
++LIST_HEAD(filter_kernel_match_list);
++LIST_HEAD(filter_kernel_nomatch_list);
+ LIST_HEAD(filter_attr_match_list);
+ LIST_HEAD(filter_attr_nomatch_list);
+ 
+@@ -218,6 +220,26 @@
+ 	return 0;
+ }
+ 
++static int kernel_filtered(const char *kernel)
++{
++	struct name_entry *loop_name;
++
++	/* skip devices matching the prohibited kernel device names */
++	list_for_each_entry(loop_name, &filter_kernel_nomatch_list, node)
++		if (fnmatch(loop_name->name, kernel, 0) == 0)
++			return 1;
++
++	/* skip devices not matching the listed kernel device names */
++	if (!list_empty(&filter_kernel_match_list)) {
++		list_for_each_entry(loop_name, &filter_kernel_match_list, node)
++			if (fnmatch(loop_name->name, kernel, 0) == 0)
++				return 0;
++		return 1;
++	}
++
++	return 0;
++}
++
+ static int attr_filtered(const char *path)
+ {
+ 	struct name_entry *loop_name;
+@@ -296,6 +318,9 @@
+ 					if (dent2->d_name[0] == '.')
+ 						continue;
+ 
++					if (kernel_filtered(dent2->d_name))
++						continue;
++
+ 					strlcpy(dirname2, dirname, sizeof(dirname2));
+ 					strlcat(dirname2, "/", sizeof(dirname2));
+ 					strlcat(dirname2, dent2->d_name, sizeof(dirname2));
+@@ -402,6 +427,9 @@
+ 					if (!strcmp(dent2->d_name, "device"))
+ 						continue;
+ 
++					if (kernel_filtered(dent2->d_name))
++						continue;
++
+ 					strlcpy(dirname2, dirname, sizeof(dirname2));
+ 					strlcat(dirname2, "/", sizeof(dirname2));
+ 					strlcat(dirname2, dent2->d_name, sizeof(dirname2));
+@@ -458,6 +486,8 @@
+ 		{ "subsystem-nomatch", 1, NULL, 'S' },
+ 		{ "attr-match", 1, NULL, 'a' },
+ 		{ "attr-nomatch", 1, NULL, 'A' },
++		{ "kernel-match", 1, NULL, 'k' },
++		{ "kernel-nomatch", 1, NULL, 'K' },
+ 		{}
+ 	};
+ 
+@@ -496,6 +526,12 @@
+ 		case 'A':
+ 			name_list_add(&filter_attr_nomatch_list, optarg, 0);
+ 			break;
++		case 'k':
++			name_list_add(&filter_kernel_match_list, optarg, 0);
++			break;
++		case 'K':
++			name_list_add(&filter_kernel_nomatch_list, optarg, 0);
++			break;
+ 		case 'h':
+ 			printf("Usage: udevtrigger OPTIONS\n"
+ 			       "  --verbose                       print the list of devices while running\n"
+@@ -504,6 +540,8 @@
+ 			       "                                  marked as failed during a previous run\n"
+ 			       "  --subsystem-match=<subsystem>   trigger devices from a matching subystem\n"
+ 			       "  --subsystem-nomatch=<subsystem> exclude devices from a matching subystem\n"
++			       "  --kernel-match=<subsystem>      trigger devices from a matching kernel device name\n"
++			       "  --kernel-nomatch=<subsystem>    exclude devices from a matching kernel device name\n"
+ 			       "  --attr-match=<file[=<value>]>   trigger devices with a matching sysfs\n"
+ 			       "                                  attribute\n"
+ 			       "  --attr-nomatch=<file[=<value>]> exclude devices with a matching sysfs\n"
+@@ -549,6 +587,8 @@
+ exit:
+ 	name_list_cleanup(&filter_subsystem_match_list);
+ 	name_list_cleanup(&filter_subsystem_nomatch_list);
++	name_list_cleanup(&filter_kernel_match_list);
++	name_list_cleanup(&filter_kernel_nomatch_list);
+ 	name_list_cleanup(&filter_attr_match_list);
+ 	name_list_cleanup(&filter_attr_nomatch_list);
+